Preface - I searched the DIY Threads and couldn't find what I am looking for.

Question: Anyone know offhand if I can tap into my auto dimming rear view mirror, which I believe has wires under the mirror cover at the windshield, to use as a power source for my radar? I believe I can, just want to make sure as I haven't done this before. If so, anyone know how to pop off the mirror wire cover on the windsheild?

Preface - I searched the DIY Threads and couldn't find what I am looking for.

Question: Anyone know offhand if I can tap into my auto dimming rear view mirror, which I believe has wires under the mirror cover at the windshield, to use as a power source for my radar? I believe I can, just want to make sure as I haven't done this before. If so, anyone know how to pop off the mirror wire cover on the windsheild?

1. For the dbags that say, .... I did.....
2. For those that say, .... I did .....

The cover splits in half very easily, just grab it and pull. there are definitely switched power and ground in the mirror, but good luck taping into them. I tried the other day to do exactly as you want to do and there is no slack in any of the wiring coming from the headliner. If you remove the mirror you might get enough room in the wires to tap them, but good luck. I have 15 yrs experience in the 12volt industry and i gave up after 10mins. Wired my V1 to the fuse box instead!

Yeah...definitely a tight fit. The green/white stripe wire plugs into one clip housing unit, while the only solid brown I see plugs into a different housing. Each behind the mirror cap housing. There is a brown/black wire that plugs into the same housing as the green/white, but not sure its that one. Plus there is a light brown wire next to the darker brown wire...like a freakin box of crayons. Will take a pic tomorrow to shor you what I mean. Oh, and there is another one that attaches to some devie on the windshield itself. [Scratches head]

Yeah...definitely a tight fit. The green/white stripe wire plugs into one clip housing unit, while the only solid brown I see plugs into a different housing. Each behind the mirror cap housing. There is a brown/black wire that plugs into the same housing as the green/white, but not sure its that one. Plus there is a light brown wire next to the darker brown wire...like a freakin box of crayons. Will take a pic tomorrow to shor you what I mean. Oh, and there is another one that attaches to some devie on the windshield itself. [Scratches head]

Are you going behind the sunroof module? Sounds like you're at the plastic clamshell behind the mirror.

Yeah, different approach. Don't have those connections. Trying this method first. I know it has to work. I did locate the green/white wire. In the second pic its next to the purple wire. Just need to locate the brown wire like you said. That one appears in the other housing attached to the windshield. Will check it out again.

Yeah, different approach. Don't have those connections. Trying this method first. I know it has to work. I did locate the green/white wire. In the second pic its next to the purple wire. Just need to locate the brown wire like you said. That one appears in the other housing attached to the windshield. Will check it out again.

Were you successful? Just ordered the blendmount and trying to decide between tapping at mirror, sunroof or fusebox through the glovebox. Have a 2012 E92.